20772680

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{337}}^1$

素因数の和:438

約数の個数: 64

約数和(自身を含む): 49645440

約数和(自身を除く): 28872760

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 67, 92, 115, 134, 184, 230, 268, 335, 337, 460, 536, 670, 674, 920, 1340, 1348, 1541, 1685, 2680, 2696, 3082, 3370, 6164, 6740, 7705, 7751, 12328, 13480, 15410, 15502, 22579, 30820, 31004, 38755, 45158, 61640, 62008, 77510, 90316, 112895, 155020, 180632, 225790, 310040, 451580, 519317, 903160, 1038634, 2077268, 2596585, 4154536, 5193170, 10386340, 20772680]

約数ペア:

[(1, 20772680), (2, 10386340), (4, 5193170), (5, 4154536), (8, 2596585), (10, 2077268), (20, 1038634), (23, 903160), (40, 519317), (46, 451580), (67, 310040), (92, 225790), (115, 180632), (134, 155020), (184, 112895), (230, 90316), (268, 77510), (335, 62008), (337, 61640), (460, 45158), (536, 38755), (670, 31004), (674, 30820), (920, 22579), (1340, 15502), (1348, 15410), (1541, 13480), (1685, 12328), (2680, 7751), (2696, 7705), (3082, 6740), (3370, 6164)]